Spanner-wrench.



@MMX f T.I.DUPPY.

SPANNBR WRENCH.

APPLICATION FILED JAN.10.1913.

1,076,565. Patented oct. 21,1913.

j/ZLZ i um ITED sTATEs PATENT oFFIoE.

THOMAS I. DUFFY, OF OHIOAGO, ILLINOIS, ASSIGNOR To E. c. SALES co., or OIIICAGO, ILLINOIS, A CORPORATION or ILLINOIS.

SPAN NER-WRENCH.

Specification of Letters Patent.

To all whom. t may concern:

Be it known that I, THOMAS I. DUFFY, a citizen of the United States, and a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful 1 Improvements in Spanner- Wrenches; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the characters of reference marked thereon, which form a part of this specification.

This invention relates to a Wrench in the nature of a Spanner Wrench, and refers more specifically 'to a wrench designed to release the lock nut or ring of a demountable wheel construction, such, for instance, as that shown in my prior application for U. S. Letters Patent, Serial No. 665,442 filed on the 3rd day of December, 1911.

Among the objects of the invention is to provide an extremely simple, economical and strong wrench for the purpose set forth, and one which is adapted to be readily applied to the nut or ring which it is to engage and to be readily disengaged or released therefrom.

In the drawings z-Figure 1 is a side elevation of a wrench embodying my invention. Fig. 2 is an edge elevation thereof. Fig. 3

y is a reverse elevation of the wrench. Fig.

4 is a cross section on the line 4 4 of Fig. 5. Fig. 5 is a fragmentary detail section on the line 5 5 of Fig. 1.

As shown in the drawings, 10 designates a ring member or closed body which iS provided with diametrically alined extensions 11, 11 and 12, 12 designate hand bars arranged in alinement with each other in the plane of the ring member 10 and formedl at their inner ends to provide projections 14, 14, adapted, in one position thereof, to extend inwardly beyond the periphery 15 of the ring member 10 for engagement with diametrically disposed notches of the nut or ring member which the wrench is adapt,- ed to manipulate. The said hand bars l2, the inner ends of which are formed to provide the Spanner lugs or projections 14, have guiding engagement with the rings or the extensions 11, in a manner to permit the hand bars to be adjusted endwise toward 'and from each other .so as to project the lugs .or extensions 14 into their operative positions, as shown in Figs. 1, 3 and 5, or to permit said luvs or extensions to be withdrawn outwardly beyond the inner periphery 15 of said ring member. As herein shown, the extensions 11 have undercut grooves and the hand bars l2 have oppositely beveled edges to engage said undercut grooves. The Said hand bars 12 are provided near their inner ends with studs 17, which may be screw-threaded or otherwise fixed thereto, and said studs extend into and play through short slots 18 formed in the solid Walls of the extensions 11, so as to thereby limit the outward movement of the hand bars in said rooved extensions. The inward movement ofg the hand bars and their projections 14 may be limited by the engagement of the studs 17 with the inner end walls of the slots 18, or may be limited by engagement of the shoulders on the hand bars with the outer ends of said extensions. Exterior to said studs 17 and notches are provided locking means arranged to coperate, when the handles 12 are pressed inwardly to bring their rojections 14 beyond the inner periphery o the ring member 10, to hold the hand bars and ring member in relatively fixed relation and avoid accidental displacement thereof, While permitting the hand bars to be readily moved Outwardly when desired.

The locking means herein shown comprise the recesses 20 formed in the hand bars and spring pressed spherical pawls 21 adapted to engage therein; the pawls being urged into said notches by the springs 22 which are inclosed in housings 23, formed in the extensions 11, and which are interposed between said spherical pawls and the end Walls of said housings.' Thus it will be seen that the notched portions of the hand bars 12 may be released from these spherical pawls 21 by endwise movement of the hand bars, while said springs 22 press the Spherical pawls into the notched portions of the hand gars 12 with sufficient force to prevent acciental displacement of .the hand bars with relation to the ringr member.V One of the hand bars is Shown in Fig. 5 in its innermost position, in which .position the spherical pawl 21 is engaged in the notch.20 of the hand bar 12 to hold the hand bar in Patented Oct. 21, 1913.

its inner position. When the hand bars are to be retracted to withdraw the projections 14 from the inner periphery 15 of the ring member 10 the Springs 22 permit the Spherical 'pawls Q1 to be forced outwardly suiii l ciently to be released from the notches 20.

In the use of the wrench, when both hand bars are endwise movable relatively to theI central "body, the hand4 bars are withdrawn from each other to draw t l ',anner projections outwardly beyond the inner margin of the body, and thereafter the centralbody or ring member is placed over the lock nut or rin to be removed and the extensions 14 are alinedwith the Spanner notches of Said ring or nut. Thereafter the hand bars are forced inwardly to engage said lugs or extensions with the Spanner notches, after which the hand bars are held one in each hand and force is applied to turn the wrench and the lock nut or ring engaged therewith. To release the wrench, the hand bars are pulled outwardly' to withdraw the projec tions from the Spanner notches, after which the wrench may be slipped freely off the hub.

The construction described permits the wrench to be readily placed over the outer end of the hub for engagement with the locking ring, in a construction such as shown in my aforesaid prior application for U. S. Letters Patent, and enables the projections 14 to be readily engaged with the Spanner notches thereof so as to effect a connection of the wrench and ring. The construction is such, also, that the natural pressure of the hands upon the hand bars 12 toturn the ring onto or off the hub member is in a direction to press the hand bars and the projections l inwardly so as to thereby insure the engagement of the projections with the Spanner notches of the locking ring or nut, during the manipulation of said ring. Thus the Spanner projections are not likely to slip out of their en aging notches during the manipulation of t e ring. The construction provides an exceedingly strong wrench of moderate dimensions and weight and one which may be readily carried in a small space. I

In cases where the locking ring or other part of the demountable hub is provided with outwardly opening sockets, such as are shown in my prlor application for U. S. Letters Patent, Serial No! 558,807, filed on the 2nd day of May, 1910, I may provide the ring or body member of the wrench with studs 25 which project laterally therefrom for engagement with such notches.

The details are capable of some variation within the spirit and scope of my invention, and the invention is not limited to the illustrated details, except as hereinafter made periphery of said ring member, at least one of which projections is ni and outwardly. y

f 2. A Spanner wrench compri-@fe jf a central ring member, opposing Spanner projections adapted to extend beyond the inner periphery of said ring member, at least one of which projections is movable inwardly and outwardly and means for limiting the inward and outward movements of said spanner projections.

3. A Spanner wrench comprising a central ring member, opposing Spanner project-ions adapted. to extend beyond the inner periphery of the said ring member, at least one of which projections is movable inwardly and outwardly, and means for releasably locking the projection in its innermost adjustment.

4. A Spanner wrench comprising a central i ble inwardly ring member, opposing Spanner projections which projections is movable inwardly andoutwardly and a spring pressed locking device to lock the projection in its innermost position, while permitting it to be withdrawn into its outermost or inoperative position.

5. A Spanner wrench comprising a central ring member and hand bars slidable therein and provided at their inner ends with Spanner projections.

6. A spanner wrench comprising a central ring member provided with opposing guide extensions, hand bars slidable in Said extensions and provided with Spanner projections at their inner ends, and means for limiting endwise movement of said hand bars.

7 A Spanner wrench comprising a central ring member, hand bars slidable therein and provided at their inner ends with Spanner Y projections, said ring member beine slotted and lugs carried by the handV ban and extending into the slots of the ring member.

8. A spanner wrench comprising a. central ring member, hand bars slidable thereinl and provided at their inner ends with Spanner projections,` the hand bars being provided exterior to the said ring member with notches and spring pressed pawls carried by the extensions and adapted to engage said notches.

t). A spanner wrench comprising a central ring member, opposing Spanner projections adapted to extend beyond the inner periphery of said ring member, at least one of which projections is movable inwardly and outwardly, said ring member being provided between said Spanner projections with other oppositely disposed, laterally extending Spanner projectlons.

10. A Spanner Wrench com rising a rin member and a hand bar sli ably en age therewith, the inner end of the bar lng adapted to extend beyond the inner periphery of the ring to constitute a Spanner projection. t

In testimony that Ik claim the foregoing as my invention I aix my signature in the resen of two witnesses, this 9th day of ecember, A. D. 1912.

THOMAS I. DUFFY.

Witnesses:

W. L. HALL, G. E. DowLE.

Copie: at this patent may be obtained for vo cents each, by addrening the Commissioner of latents, Washington, D. 0." 

